Ĭao X, Wang J, Xiong Y, Yang H, Yang M, Ye P, Bencivenga S, Sablowski R, Jiao Y (2020) A self-activation loop maintains meristematic cell fate for branching. Heisler MG, Ohno C, Das P, Sieber P, Reddy GV, Long JA, Meyerowitz EM (2005) Patterns of auxin transport and gene expression during primordium development revealed by live imaging of the Arabidopsis inflorescence meristem. Reinhardt D, Mandel T, Kuhlemeier C (2000) Auxin regulates the initiation and radial position of plant lateral organs. īenková E, Michniewicz M, Sauer M, Teichmann T, Seifertová D, Jürgens G, Friml J (2003) Local, efflux-dependent auxin gradients as a common module for plant organ formation. Long J, Barton MK (2000) Initiation of axillary and floral meristems in Arabidopsis. Long JA, Moan EI, Medford JI, Barton MK (1996) A member of the KNOTTED class of homeodomain proteins encoded by the STM gene of Arabidopsis.
Jackson D, Veit B, Hake S (1994) Expression of maize KNOTTED1 related homeobox genes in the shoot apical meristem predicts patterns of morphogenesis in the vegetative shoot. Hay A, Tsiantis M (2010) KNOX genes: versatile regulators of plant development and diversity.
DevelopmentĬlark SE, Jacobsen SE., Levin JZ, Meyerowitz EM (1996) The CLAVATA and SHOOT MERISTEMLESS loci competitively regulate meristem activity in arabidopsis.
(96)80036-7īarton MK, Poethig RS (1993) Formation of the shoot apical meristem in Arabidopsis thaliana: an analysis of development in the wild type and in the shoot meristemless mutant. Hake S (1996) Shootmeristemless ties the knot. Lenhard M, Laux T (2003) Stem cell homeostasis in the Arabidopsis shoot meristem is regulated by intercellular movement of CLAVATA3 and its sequestration by CLAVATA1. DevelopmentĬlark SE, Running MP, Meyerowitz EM (1993) CLAVATA1, a regulator of meristem and flower development in Arabidopsis. Ĭlark SE, Running MP, Meyerowitz EM (1995) CLAVATA3 is a specific regulator of shoot and floral meristem development affecting the same processes as CLAVATA1. Zhang WJ, Zhai LM, Yu HX, Peng J, Wang SS, Zhang XS, Su YH, Tang LP (2020) The BIG gene controls size of shoot apical meristems in Arabidopsis thaliana. Yadav RK, Tavakkoli M, Xie M, Girke T, Venugopala RG (2014) A high-resolution gene expression map of the arabidopsis shoot meristem stem cell niche. Walles B, Steeves TA, Sussex IM (1989) Patterns in plant development. In contrast to previously published data, these data suggest that STM and KNAT6 are redundantly required for the vegetative SAM, but insufficient for the inflorescence meristem.īarton MK (2010) Twenty years on: The inner workings of the shoot apical meristem, a developmental dynamo. stm-1 knat6 clv3 also showed reduced inflorescence size as compared to clv3 single or stm clv3 double mutants. Notably, the stm-1 knat6 and stm-1 knat6 clv3 alleles lack tissue in the presumed region of SAM that is a novel phenotype reported in Arabidopsis mutants. stm-1 knat6 clv3 triple mutants result in shoot meristem termination and produce fused cotyledons similar to stm knat6 double mutant. In this study, we show that clv3 fails to promote shoot meristem formation in stm-1 background if we also remove KNAT6. STM works in conjunction with its closely related homologue KNOTTED1-LIKE HOMEOBOX GENE 6 (KNAT6) to promote meristem development and organ separation, as stm knat6 double mutants fail to form shoot meristem and produce a fused cotyledon. Genetic interaction studies revealed that stm and clv3 dominantly suppress each other’s phenotypes. In Arabidopsis, the genes SHOOT MERISTEMLESS ( STM) and CLAVATA3 ( CLV3) antagonistically regulate shoot meristem development. STM is essential for both development and maintenance of the meristem, as stm mutants fail to develop a shoot meristem. CLV3, on the other hand, negatively regulates meristem proliferation, and clv3 mutants possess an enlarged shoot meristem.
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